5363d97ac1
Task #453. Recipient (e.g. yas) couldn't see folders that an owner (e.g. admin) had shared with them — the server returned them correctly via /note-folders/shared-with-me, but the rail's "Shared with me" section was gated on `mode === "rail"`. On the default Notes screen (My Notes tab + "All notes" selection) the rail is mounted in `chips-only` mode, so the section was never rendered. Most recipients only ever saw the default screen, so shared folders were effectively invisible. Fix: drop the `mode === "rail"` gate in folders-rail.tsx so the shared-with-me section renders in both modes. The section already uses `contents md:block` (so chips inline into the mobile horizontal strip), and its "Shared with me" label is already `hidden md:block`, so the rendering stays compact on mobile and labelled on desktop in both modes. No backend changes; the existing socket invalidations on `note-folder-shared` / `note-folder-unshared` already keep the list fresh in realtime. Out of scope: - FoldersBrowser (the grid/list of own folders in the main content area) intentionally not extended to also list shared folders; the rail entry is sufficient and matches the task's "as a chip alongside the own-folder chips" outcome on mobile and "Shared with me" sidebar section on desktop. - No changes to permissions, notifications, or per-note sharing. - Notes top-bar freeze (Task #452) is untouched.